Year	National currency, Monthly Level
1991-01-01	233594000000
1992-01-01	248090000000
1993-01-01	421601000000
1994-01-01	458844000000
1995-01-01	566171000000
1996-01-01	601669000000
1997-01-01	707596000000
1998-01-01	833804000000
1999-01-01	908756000000
2000-01-01	1121098000000
2001-01-01	1268148000000
2002-01-01	1254861000000
2003-01-01	1370929000000
2004-01-01	1722655000000
2005-01-01	1868586000000
2006-01-01	2144572000000
2007-01-01	2479235000000
2008-01-01	2473736000000
2009-01-01	2138625000000
2010-01-01	2532795000000
2011-01-01	2878690000000
2012-01-01	3072597000000
2013-01-01	3174704000000
2014-01-01	3628826000000
2015-01-01	3883248000000
2016-01-01	3974041000000
2017-01-01	4244586000000